César Prieto Bio
César Prieto (born May 10, 1999) is a Cuban professional baseball infielder for the St. Louis Cardinals of Major League Baseball (MLB). He made his MLB debut in 2025 after a path through the Cuban national program and the Baltimore Orioles’ minor league system. Prieto is regarded as a contact-oriented middle infielder who controls the strike zone and provides steady defense.
Born in Cuba, Prieto rose through the Elefantes de Cienfuegos and the Cuba national baseball team before leaving the country in 2021. He has since worked his way up the affiliated minor leagues and reached the majors as a member of the St. Louis Cardinals organization.
Early Life and Background
César Prieto was born on May 10, 1999, in Cuba. He grew up in a country with a deep baseball tradition, and the sport played a central role in his early life. Details about his family and hometown are not publicly confirmed.
He joined the Elefantes de Cienfuegos in 2017 as a teenager and quickly emerged as a promising infielder. Prieto’s bat and glove drew attention across the Cuban league system, and he was soon part of the Cuba national baseball team, representing his country in international competition. His early play in Cienfuegos established him as one of the top young hitters in the country.
During the 2018–19 Cuban season, Prieto won the Rookie of the Year Award, a notable early milestone in his career. He continued to develop his game as a middle infielder while competing at the highest levels available in Cuba.
Path to Baseball
Prieto’s path to professional baseball outside Cuba began in 2021, when he defected to the United States while in Florida for the qualifying tournament for the 2020 Summer Olympics. His decision to leave the Cuban national team marked the start of his pursuit of a Major League Baseball career.
On January 16, 2022, Prieto signed with the Baltimore Orioles as an international free agent for a signing bonus of $650,000. The Orioles placed him in their minor league system, where he began adjusting to professional baseball in the United States. He split his first season between the High-A Aberdeen IronBirds and the Double-A Bowie Baysox.
Across 115 games in 2022, Prieto batted .273/.314/.404 with 11 home runs and 57 runs batted in (RBI). The performance showed promise and positioned him for a promotion back to Double-A in 2023.
César Prieto Career
Early Career (2022–2023)
Prieto began his United States professional career in 2022 with the Aberdeen IronBirds before moving up to the Bowie Baysox. The transition from Cuban baseball to the American minor league system required adjustments, and he used the season to refine his approach at the plate and in the field.
In 2023, Prieto returned to Bowie and hit .364 with 4 home runs and 29 RBI in 58 games, earning a promotion to the Triple-A Norfolk Tides. With Norfolk, he slashed .317/.365/.471 with 2 home runs and 20 RBI in 27 contests. His strong 2023 performance across both levels established him as a rising infield prospect in the Orioles’ system.
Baltimore Orioles Era (2022–2023)
Prieto spent parts of two seasons in the Orioles’ minor leagues, working his way from High-A to Triple-A. He played under the Baltimore banner from his January 2022 signing through the summer of 2023, reaching Norfolk late in the 2023 season. The Orioles’ investment reflected his long-term potential as a contact hitter and middle infielder.
St. Louis Cardinals Era (2023–Present)
On August 1, 2023, the Orioles traded César Prieto, Drew Rom, and Zack Showalter to the St. Louis Cardinals in exchange for pitcher Jack Flaherty. The trade moved Prieto into a new organization and a fresh opportunity to develop. He finished 2023 with the Triple-A Memphis Redbirds, appearing in 38 games and batting .270/.314/.387 with 4 home runs, 20 RBI, and 2 stolen bases.
In 2024, Prieto spent the full season with Memphis and played in 129 games. He slashed .279/.318/.445 with 14 home runs and 56 RBI, providing consistent offense and steady defense. The season cemented his status as a depth option for St. Louis at the middle infield positions.
He returned to Memphis to begin 2025 and batted .295/.359/.448 with 9 home runs, 62 RBI, and 11 stolen bases in 107 appearances. On August 29, 2025, the Cardinals selected Prieto to the 40-man roster and promoted him to the major leagues. He made his MLB debut that day against the Cincinnati Reds, a 7-5 Cardinals victory in 10 innings.
Driving Style and Strengths
Prieto is known as a contact-oriented hitter who controls the strike zone and uses the whole field. Defensively, he profiles as a reliable middle infielder with steady hands and the ability to play both second base and shortstop. His combination of on-base skills and defensive versatility has been the foundation of his prospect value.
Notable Events and Milestones
Prieto’s signature milestones include his 2018–19 Cuban Rookie of the Year Award, his 2021 defection to the United States, and his MLB debut with the St. Louis Cardinals on August 29, 2025. The trade from Baltimore to St. Louis in August 2023 and his first major league at-bat against the Cincinnati Reds stand out as defining moments in his professional journey.
César Prieto Career Wins
As an infielder and hitter, César Prieto’s career is measured in on-field performance rather than race or event wins. The following sections highlight his production across the Cuban, Orioles, and Cardinals systems.
Minor League Highlights
Prieto’s first season in the United States produced 11 home runs and 57 RBI across 115 games at High-A Aberdeen and Double-A Bowie. In 2023, he hit .364 with 4 home runs and 29 RBI in 58 games at Bowie before posting a .317 average with 2 home runs and 20 RBI in 27 games at Triple-A Norfolk. His 2024 Memphis campaign of 14 home runs and 56 RBI in 129 games represented his most extensive single-season workload in affiliated ball.
Other Performances
In Cuba, Prieto played for the Elefantes de Cienfuegos from 2017 and represented the Cuba national baseball team in international competition. He won the Rookie of the Year Award in the 2018–19 Cuban season, his first major individual honor.
César Prieto Family
Family Background and Baseball Lineage
César Prieto was born and raised in Cuba. Publicly confirmed details about his parents and immediate family are limited.
Personal Life
Prieto has kept his personal life largely private. He has not publicly confirmed details about a spouse or children.
2025 Season Performance
The 2025 season marked César Prieto’s long-awaited arrival in the major leagues. He opened the year with the Triple-A Memphis Redbirds and produced one of his strongest seasons at that level, batting .295/.359/.448 with 9 home runs, 62 RBI, and 11 stolen bases in 107 games. His consistent on-base ability and extra-base power made him a regular in the Memphis lineup and kept him in consideration for a call-up.
On August 29, 2025, the St. Louis Cardinals added Prieto to the 40-man roster and promoted him to the major leagues. He made his debut that same day against the Cincinnati Reds, appearing in a game the Cardinals won 7-5 in 10 innings. The debut was the culmination of a four-year journey from Cuba through the Orioles’ and Cardinals’ minor league systems.
Looking ahead, Prieto enters the back end of the 2025 season as a newly minted MLB middle infielder. His plate discipline, defensive versatility, and experience against upper-level pitching give him a path to regular playing time as the Cardinals evaluate their infield options for the future.